Table 1.

Multiple Regression with Baseline Assessment Risk Measures Predicting First-Onset Depressive Disorder at the 18-Month Follow-Up Assessment

	R2	χ2	Adjusted OR	95% CI
	.15	31.23***
Adolescent Dysphoria Symptoms			1.57	1.17–2.10**
Adolescent Reward Positivity (RewP)			1.50	1.03–2.18*
Adolescent Reward-Related Delta			1.50	1.06–2.11*
Adolescent Loss-Related Theta			1.07	0.76–1.51
Adolescent Lifetime Anxiety Disorder			1.96	0.92–4.17
Adolescent Lifetime Behavioral Disorder			1.18	0.30–4.60
Parental Lifetime Depressive Disorder			1.49	0.70–3.17
Parental Lifetime Anxiety Disorder			1.10	0.54–2.24
Parental Lifetime Substance Use Disorder			1.00	0.47–2.15

Note. Age was included as a covariate in the analyses. Adolescent RewP and reward-related delta demonstrated an inverse relationship with first-onset depressive disorder. Therefore, the RewP and reward-related delta were multiplied by −1 to produce the inverse relationship, such that more positive values indicated a reduced neural response to rewards, in order to better compare the reward measures with the other risk measures. The RewP, reward-related delta, loss-related theta, and dysphoria symptom measures were z-transformed to allow for direct comparison of the adjusted odds ratios. Adolescent and parental lifetime psychiatric disorder measures were dichotomous independent variables (0 = absent, 1 = present) and first-onset depressive disorder was the dichotomous dependent variable (0 = absent, 1 = present). OR = odds ratio; CI = confidence interval.

^*p < .05,

^**p < .01,

^***p < .001